If the wavelength of wave B is 0.45 m and its frequency is 12 Hz, what is the wave speed?

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Phase changes are chemical changes. true or false

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom